fix(helm): maintain any existing comments in Chart.yaml

[ben-foxmoore]

As raised in #1944, the current approach for Helm charts (using js-yaml library) strips all comments from the file. This PR switches to using the popular yaml library (eemeli/yaml), and then patching the version value directly. This helps maintain any comments which have been added to the Chart.yaml - Renovate comments are the driving cause in our case.

Fixes #1944 🦕

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[ben-foxmoore]

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[chingor13]

Thanks! Looks great!

[raja-anbazhagan]

@chingor13 @ben-foxmoore. This issue relapsed again on latest versions.

https://github.com/googleapis/release-please/blob/422df5a6a9d44a52c6c682563d1795b8fd246215/package.json#L89C1-L90C1

I have Chart.yaml with # x-release-please-start-version # x-release-please-end comments. But they are absolutely being scrapped.

[raja-anbazhagan]

This issue relapsed again on latest versions.

nevermind. I just had to use generic type to override file extension based updates.